WANG Yixin,SUN Jian,GAO Yiying,et al.Research on connection location and capacity optimization of renewable energy stations considering system strength constraints[J].Electric Power Automation Equipment,2026,46(03):132-138.
WANG Yixin,SUN Jian,GAO Yiying,et al.Research on connection location and capacity optimization of renewable energy stations considering system strength constraints[J].Electric Power Automation Equipment,2026,46(03):132-138. DOI: 10.16081/j.epae.202512014.
Research on connection location and capacity optimization of renewable energy stations considering system strength constraints
The large-scale integration of renewable energy sources into the power grid leads to the weakening of AC system strength. The reasonable planning of the siting and sizing of renewable energy stations can help enhance system strength. Therefore,a generalized short circuit ratio(gSCR) index is introduced to quan-titatively characterize the system strength,which is then incorporated into an optimization model for the siting and sizing of renewable energy stations. A mixed-integer optimization model is established with system streng-th as the optimization objective. The problem of siting and sizing is decomposed into a capacity optimization subproblem and a siting master problem. By the equivalent transformation of generalized short-circuit ratio constraints,the convexity of the optimization problem is ensured. The generalized Benders decomposition algorithm is employed to alternately solve the master problem and subproblem,which reduces the difficulty of solving the optimization problem and achieves the optimal siting and sizing of renewable energy stations. The simulation cases show that the proposed optimization method effectively enhances system strength and reduces the risk of small-signal instability.
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Polytechnic Institute,Zhejiang University
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